1256051 has 8 divisors (see below), whose sum is σ = 1302000. Its totient is φ = 1211040.

The previous prime is 1256041. The next prime is 1256063. The reversal of 1256051 is 1506521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1256051 - 2¹⁸ = 993907 is a prime.

It is a super-2 number, since 2×1256051² = 3155328229202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1256041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3425 + ... + 3773.

It is an arithmetic number, because the mean of its divisors is an integer number (162750).

2^1256051 is an apocalyptic number.

1256051 is a deficient number, since it is larger than the sum of its proper divisors (45949).

1256051 is an equidigital number, since it uses as much as digits as its factorization.

1256051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1256051 is about 1120.7368112095. The cubic root of 1256051 is about 107.8952745686.

The spelling of 1256051 in words is "one million, two hundred fifty-six thousand, fifty-one".